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Table 2 Blocking and matching variables used in probability matching passes for E linkage strategies

From: Linkage of health and aged care service events: comparing linkage and event selection methods

Pass Blocking variables Match variables
1 region definition 1 sex date of birth event dates none
2 region definition 2 sex date of birth event dates: one-sided variation (non-overlapping)
3 region definition 2 sex day of birth month of birth event dates year of birth
4 region definition 2 sex year of birth event dates day of birth month of birth
5 region definition 2 sex date of birth event dates: two-sided variation
6 region definition 3 sex date of birth event dates none
7 region definition 4 sex date of birth event dates none
  1. Note: Dates were only used as blocking variables if an exact date match was appropriate. Early investigations indicated that allowing variation in both date of birth and event dates leads to an unacceptable number of erroneous matches.